Re: [PATCH][RFC] Xen PV-on-HVM guest support

[Jan Kiszka <jan.kiszka@web.de>]

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Ed Swierk wrote:
> Thanks for the feedback; I'll post a new version shortly.
> 
> On Tue, Oct 13, 2009 at 11:45 PM, Jan Kiszka <jan.kiszka@web.de> wrote:
>> Interesting stuff. How usable is your work at this point? I've no
>> immediate demand, but the question if one could integrate Xen guests
>> with KVM already popped up more than once @work.
> 
> So far I've managed to boot CentOS 5.3 (both i386 and x86_64) and use
> the Xen PV block and net devices, with pretty good performance. I've
> also booted FreeBSD 8.0-RC1 (amd64 only) with a XENHVM kernel and used
> the Xen PV block and net devices, but the performance of the net
> device is significantly worse than with CentOS. Also some FreeBSD
> applications use a flag that's not yet implemented in the net device
> emulation, but I'm working on fixing that.
> 
> Overall it seems pretty solid for Linux PV-on-HVM guests. I think more
> work is needed to support full PV guests, but I don't know how much.
> Have folks been asking about PV-on-HVM or full PV?

Not all requests weren't that concrete /wrt technology, but some had
older setups and were definitely using full PV.

Jan


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